I hope you don't change your opinion. Why? Because then it wouldn't be yours!

The important thing, from what I have observed, is to not belittle the opinions (or character) of others. You can disagree with them, but it is a different thing entirely to make strong statements about how their opinions are either wrong, misguided, in poor taste, etc.

The only time I get a little agitated is when people take my opinion, sometimes strongly expressed, as a threat to their opinion.

But sometimes that is my fault. If an opinion is expressed strongly, and without prefaces and caveats to soften it, that opinion can sometimes be interpreted as an attack on the opinions of those who hold a very different one.

Personally, I have difficulty understanding how personal opinions on matters of film and art can be threatening to people. So I have been working at making sure to include "IMOs," and "I may be in the minority" and other such qualifiers, which really help in fostering a cordial dialogue.